I've beeen reading these pages with interest. i guess i've been lucky, as i Can tuck without much hassle. i just wear a tight gstring/thong, and every thing stays up.
I can then get away with wearing my wifes jeans, which really stick to me like a glove. they give me a nice firm bottom.

I've been able to actually walk part of the way from work to my parked car, about 15mins away wearing them, and not showing any bulge at all :-) . I'll try to take a few pictures.